GB1254492A - Method of reducing air lines and water content in the manufacture of silica glass - Google Patents
Method of reducing air lines and water content in the manufacture of silica glassInfo
- Publication number
- GB1254492A GB1254492A GB2673769A GB2673769A GB1254492A GB 1254492 A GB1254492 A GB 1254492A GB 2673769 A GB2673769 A GB 2673769A GB 2673769 A GB2673769 A GB 2673769A GB 1254492 A GB1254492 A GB 1254492A
- Authority
- GB
- United Kingdom
- Prior art keywords
- crucible
- silica glass
- liner
- supplied
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/02—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating
- C03B5/033—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating by using resistance heaters above or in the glass bath, i.e. by indirect resistance heating
- C03B5/0336—Shaft furnaces
Abstract
1,254,492. Drawing silica glass. WESTING- HOUSE ELECTRIC CORP. 27 May, 1969 [6 June, 1968], No. 26737/69. Heading C1M. Silica glass (e.g. as tubing) is drawn from a drawing die 44 at the lower portion of a refractory metal (e.g. Mo, W) crucible 30, quartz crystals being supplied to and melted in said crucible, an atmosphere of an inert gas being maintained above the quartz fragments. The gas may be He, optionally with up to 50% Ar and/or Ne. The gas is supplied, at 1-5 p.s.i. above atmospheric pressure, via pipe 46, and preferably is supplied also, via pipe 48, to the centre of the mandrel 44. The crucible is heated by tungsten elements 22, which are disposed inside a liner 21, preferably of ZrO 2 . The double walled furnace jacket 12 is water cooled, and the space between jacket 12 and liner 21 may be filled with ZrO 2 powder. The heating space between liner 21 and crucible 30 may be filled with a 80% N 2 , 20% H 2 (by volume) gas mixture. The position of the crucible 30 in the furnace may be altered vertically.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US73512268A | 1968-06-06 | 1968-06-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1254492A true GB1254492A (en) | 1971-11-24 |
Family
ID=24954456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2673769A Expired GB1254492A (en) | 1968-06-06 | 1969-05-27 | Method of reducing air lines and water content in the manufacture of silica glass |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE733966A (en) |
| DE (1) | DE1927851A1 (en) |
| FR (1) | FR2010274A1 (en) |
| GB (1) | GB1254492A (en) |
| NL (1) | NL6908515A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017103168A1 (en) * | 2015-12-18 | 2017-06-22 | Heraeus Quarzglas Gmbh & Co. Kg | Gas purging for melting furnace and production method for quartz glass |
| US10618833B2 (en) | 2015-12-18 | 2020-04-14 | Heraeus Quarzglas Gmbh & Co. Kg | Preparation of a synthetic quartz glass grain |
| US10676388B2 (en) | 2015-12-18 | 2020-06-09 | Heraeus Quarzglas Gmbh & Co. Kg | Glass fibers and pre-forms made of homogeneous quartz glass |
| US10730780B2 (en) | 2015-12-18 | 2020-08-04 | Heraeus Quarzglas Gmbh & Co. Kg | Preparation of a quartz glass body in a multi-chamber oven |
| CN111977940A (en) * | 2020-09-24 | 2020-11-24 | 连云港三明石英制品有限公司 | Multifunctional quartz glass continuous melting furnace |
| US11053152B2 (en) | 2015-12-18 | 2021-07-06 | Heraeus Quarzglas Gmbh & Co. Kg | Spray granulation of silicon dioxide in the preparation of quartz glass |
| US11236002B2 (en) | 2015-12-18 | 2022-02-01 | Heraeus Quarzglas Gmbh & Co. Kg | Preparation of an opaque quartz glass body |
| US11299417B2 (en) | 2015-12-18 | 2022-04-12 | Heraeus Quarzglas Gmbh & Co. Kg | Preparation of a quartz glass body in a melting crucible of refractory metal |
| US11339076B2 (en) | 2015-12-18 | 2022-05-24 | Heraeus Quarzglas Gmbh & Co. Kg | Preparation of carbon-doped silicon dioxide granulate as an intermediate in the preparation of quartz glass |
| US11492285B2 (en) | 2015-12-18 | 2022-11-08 | Heraeus Quarzglas Gmbh & Co. Kg | Preparation of quartz glass bodies from silicon dioxide granulate |
| US11492282B2 (en) | 2015-12-18 | 2022-11-08 | Heraeus Quarzglas Gmbh & Co. Kg | Preparation of quartz glass bodies with dew point monitoring in the melting oven |
| US11952303B2 (en) | 2015-12-18 | 2024-04-09 | Heraeus Quarzglas Gmbh & Co. Kg | Increase in silicon content in the preparation of quartz glass |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3227786C2 (en) * | 1982-07-24 | 1984-08-02 | Heraeus Quarzschmelze Gmbh, 6450 Hanau | Process for the production of a quartz glass tube |
-
1969
- 1969-05-27 GB GB2673769A patent/GB1254492A/en not_active Expired
- 1969-05-31 DE DE19691927851 patent/DE1927851A1/en active Pending
- 1969-06-02 BE BE733966D patent/BE733966A/xx unknown
- 1969-06-04 NL NL6908515A patent/NL6908515A/xx unknown
- 1969-06-05 FR FR6918562A patent/FR2010274A1/fr not_active Withdrawn
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11236002B2 (en) | 2015-12-18 | 2022-02-01 | Heraeus Quarzglas Gmbh & Co. Kg | Preparation of an opaque quartz glass body |
| US11339076B2 (en) | 2015-12-18 | 2022-05-24 | Heraeus Quarzglas Gmbh & Co. Kg | Preparation of carbon-doped silicon dioxide granulate as an intermediate in the preparation of quartz glass |
| US10676388B2 (en) | 2015-12-18 | 2020-06-09 | Heraeus Quarzglas Gmbh & Co. Kg | Glass fibers and pre-forms made of homogeneous quartz glass |
| US10730780B2 (en) | 2015-12-18 | 2020-08-04 | Heraeus Quarzglas Gmbh & Co. Kg | Preparation of a quartz glass body in a multi-chamber oven |
| US11952303B2 (en) | 2015-12-18 | 2024-04-09 | Heraeus Quarzglas Gmbh & Co. Kg | Increase in silicon content in the preparation of quartz glass |
| US11053152B2 (en) | 2015-12-18 | 2021-07-06 | Heraeus Quarzglas Gmbh & Co. Kg | Spray granulation of silicon dioxide in the preparation of quartz glass |
| US10618833B2 (en) | 2015-12-18 | 2020-04-14 | Heraeus Quarzglas Gmbh & Co. Kg | Preparation of a synthetic quartz glass grain |
| WO2017103168A1 (en) * | 2015-12-18 | 2017-06-22 | Heraeus Quarzglas Gmbh & Co. Kg | Gas purging for melting furnace and production method for quartz glass |
| US11492282B2 (en) | 2015-12-18 | 2022-11-08 | Heraeus Quarzglas Gmbh & Co. Kg | Preparation of quartz glass bodies with dew point monitoring in the melting oven |
| US11492285B2 (en) | 2015-12-18 | 2022-11-08 | Heraeus Quarzglas Gmbh & Co. Kg | Preparation of quartz glass bodies from silicon dioxide granulate |
| US11299417B2 (en) | 2015-12-18 | 2022-04-12 | Heraeus Quarzglas Gmbh & Co. Kg | Preparation of a quartz glass body in a melting crucible of refractory metal |
| TWI793065B (en) * | 2015-12-18 | 2023-02-21 | 德商何瑞斯廓格拉斯公司 | Gas flushing for melting ovens and process for preparation of quartz glass |
| US11708290B2 (en) | 2015-12-18 | 2023-07-25 | Heraeus Quarzglas Gmbh & Co. Kg | Preparation of a quartz glass body in a multi-chamber oven |
| CN111977940A (en) * | 2020-09-24 | 2020-11-24 | 连云港三明石英制品有限公司 | Multifunctional quartz glass continuous melting furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1927851A1 (en) | 1969-12-11 |
| FR2010274A1 (en) | 1970-02-13 |
| NL6908515A (en) | 1969-12-09 |
| BE733966A (en) | 1969-11-17 |
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